Knob



FIG. 1 is a perspective view of the knob.

FIG. 2 is a top plan view of the knob.

FIG. 3 is a front elevation view of the knob.

FIG. 4 is a side elevation view of the knob; and,

FIG. 5 is a bottom plan view of the knob.

The broken lines at the base of the stem represent the bounds of the claim and all others are for illustrative purposes only. None of the broken lines form a part of the claimed design. 

I claim the ornamental design for a knob, as shown and described. 